JP3956906B2 - Resin sealing method and apparatus for electronic parts - Google Patents

Resin sealing method and apparatus for electronic parts Download PDF

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Publication number
JP3956906B2
JP3956906B2 JP2003179113A JP2003179113A JP3956906B2 JP 3956906 B2 JP3956906 B2 JP 3956906B2 JP 2003179113 A JP2003179113 A JP 2003179113A JP 2003179113 A JP2003179113 A JP 2003179113A JP 3956906 B2 JP3956906 B2 JP 3956906B2
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JP
Japan
Prior art keywords
resin
stencil
sealing
sealing resin
circuit board
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Expired - Fee Related
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JP2003179113A
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Japanese (ja)
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JP2005019504A (en
Inventor
成之 奥本
和宏 村上
哲也 津村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、電子回路を形成する電子部品の樹脂封止方法およびその装置に関するものである。
【0002】
【従来の技術】
従来における電子部品の樹脂封止およびアンダーフィル形成方法としては、実装された電子部品に封止樹脂を、ディスペンサにより供給し注入充填する樹脂封止およびアンダーフィル形成方法が知られている。
【0003】
図12は、従来における電子部品の樹脂封止およびアンダーフィル形成用のディスペンサによる樹脂封止装置の要部構成断面図である。
【0004】
図12において、1は電子機器に使用される電子回路を形成するための、樹脂やセラミックなどの基材で成る多層構造の回路基板、2は同電子回路を形成するための、半田および金などのLGAおよびBGAを有し、回路基板1に搭載され実装された能動部品、そして3は同電子回路を形成するための、半田にて回路基板1に搭載され実装された受動部品である。
【0005】
4は熱伝導材および絶縁材からなる絶縁基材や、熱伝導材を含有するフィラー材でなり、低粘度で高流動性を有する封止樹脂、5は封止樹脂4が封入され、エアや油圧などの圧力により回路基板1の所定箇所に封止樹脂4を供給し注入充填するディスペンサである。
【0006】
6は前記構成部材や機器を内蔵し、ステンレスなどの硬質金属材でなる真空チャンバ、7は真空チャンバ6の内部を真空吸引するための真空ポンプである。
【0007】
以上のように構成し配設された樹脂封止装置において、真空ポンプ7を駆動させて真空チャンバ6内を真空吸引して所定の真空度(圧)にする。次に封止すべき所定の能動部品2および受動部品3の周囲に、ディスペンサ5により所定量の封止樹脂4を供給し注入充填する。
【0008】
その後、真空チャンバ6内を大気圧に開放することにより、能動部品2および受動部品3と回路基板1との空隙へ封止樹脂4を浸透充填させるものである。
【0009】
なお、この出願に関する先行技術文献情報としては、例えば特許文献1が知られている。
【0010】
【特許文献1】
特開2001−217267号公報
【0011】
【発明が解決しようとする課題】
前記従来のディスペンサによる電子部品の樹脂封止およびアンダーフィル形成方法では、フィラー含有率の高い封止樹脂4を使用した能動部品2および受動部品3と回路基板1との空隙への浸透充填においては、封止樹脂4が高粘度で低流動性の物性であり、かつ真空圧と大気圧との差圧力による浸透充填であるため、未充填部分が発生するという課題を有していた。
【0012】
本発明は前記従来の課題を解決しようとするものであり、フィラー含有率の高い高粘度で低流動性の封止樹脂を、能動部品および受動部品と回路基板との空隙へ、確実かつ緻密に浸透充填し、接続信頼性や密着強度を向上させることのできる電子部品の樹脂封止方法およびその装置を提供することを目的とするものである。
【0013】
【課題を解決するための手段】
前記目的を達成するために、本発明は以下の構成を有するものである。
【0014】
本発明の請求項1に記載の発明は、内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバ内に、電子回路を形成する電子部品が搭載、実装された回路基板を挿入し、前記電子部品の周辺と封止樹脂とを大気圧から真空圧下で脱気、注入充填を行い所定時間放置した後、気体媒体を前記真空加圧チャンバ内へ供給した加圧雰囲気下で、前記封止樹脂を回路基板へ差圧浸透充填し、その後大気圧に開放する電子部品の樹脂封止方法であって、前記封止樹脂の注入充填は、真空加圧チャンバ内に有するスキージと孔版による印刷塗布により行い、この印刷塗布後に前記孔版を昇温することで封止樹脂を半硬化あるいは本硬化させて、その後大気圧に開放するものであり、これにより、高密度に実装された電子部品相互間や、回路基板との空隙にも、十分に封止樹脂を注入することができるとともに、チャンバ内を大気開放する際に、加圧状態の雰囲気から大気状態の雰囲気への差圧で、搭載し実装された電子部品と回路基板との空隙に充填された封止樹脂の抜け、すなわち喪失を防ぐことができるという作用効果が得られる。また、封止樹脂を脱泡する際に電子部品への負荷を低減することができるという作用効果も同時に得られる。
【0015】
本発明の請求項2に記載の発明は、内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバ内に、電子回路を形成する電子部品が搭載、実装された回路基板を挿入し、前記電子部品の周辺と封止樹脂とを大気圧から真空圧下で脱気、注入充填を行い所定時間放置した後、気体媒体を前記真空加圧チャンバ内へ供給した加圧雰囲気下で、前記封止樹脂を回路基板へ差圧浸透充填して、大気圧に開放する電子部品の樹脂封止方法であって、前記封止樹脂の注入充填は、移動可能なディスペンサと孔版とを用いて二回以上に分割して行うとともに、前記孔版を、桟で区分けされた複数の開口部を有する分割孔版として、これら開口部に対応する電子部品に封止樹脂の注入充填を行い、この注入充填後に前記分割孔版を昇温することで封止樹脂を半硬化あるいは本硬化させて、その後大気圧に開放するものであり、これにより、封止樹脂を必要な注入充填量に高精度に制御して、最小限の封止樹脂量で、搭載、実装した電子部品と回路基板との空隙に、確実に封止樹脂を注入充填することができる作用効果が得られる。
【0016】
本発明の請求項3に記載の発明は、分割孔版の上面には、開口部側面に貫通した封止樹脂の注入管口を有し、この注入管口にディスペンサの先端を挿入して、前記注入管口を経由して封止樹脂を注入充填するものであり、これにより、回路基板の直近上面に沿った封止樹脂の注入充填が可能になるという作用効果が得られる。
【0017】
本発明の請求項4に記載の発明は、内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバと、この真空加圧チャンバ内に設置された、電子部品を搭載、実装した回路基板を固定、保持して移動自在な基板保持台と、この基板保持台上に設置された、中央部に封止樹脂が注入充填される開口部を有する孔版と、前記封止樹脂を回路基板上に印刷塗布するためのスキージまたはディスペンサとを備え、前記孔版は、温度制御が自在な加熱媒体である昇温体、または冷却媒体である冷却体を内蔵した電子部品の樹脂封止装置であって、これにより、封止樹脂を低粘度で流動化させて注入充填することができるとともに、高真空の雰囲気と加圧の雰囲気を同一のチャンバ内で設定することができるので、真空圧下で封止樹脂を注入充填した回路基板を、加圧用チャンバ内へ移し替えるための操作および作業時間を削減することができるという作用効果が得られる。
【0018】
本発明の請求項5に記載の発明は、孔版は、桟で区分けされた複数の開口部を有する分割孔版である請求項4に記載の電子部品の樹脂封止装置であって、これにより、封止樹脂を必要な注入充填量に高精度で制御することが可能となり、空隙に封止樹脂を確実に注入充填することができるという作用効果が得られる。
【0019】
本発明の請求項6に記載の発明は、孔版の開口部外周下面に、弾性体からなるゴムパッキンを配設し、基板保持台を上昇させることで、前記ゴムパッキンを変形圧縮させて、前記基板保持台と回路基板との密着および押圧を行う請求項4または請求項5に記載の電子部品の樹脂封止装置であって、これにより、封止樹脂の塗布における孔版と回路基板との界面を、封止樹脂が流出するのを防ぐと共に、孔版の開口部に注入充填された封止樹脂を、真空圧の雰囲気で脱泡する際に、孔版の上面より確実に脱泡することができるという作用効果が得られる。
【0027】
【発明の実施の形態】
(実施の形態1)
以下、実施の形態1を用いて、本発明の特に請求項1〜5,10〜13に記載の発明について、図面を参照しながら説明する。なお、従来の技術で説明した構成機器および部材に関しては、同一の記号を付与し詳細な説明は省略する。
【0028】
図1は、本発明の実施の形態1における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止(印刷)装置の要部構成断面図である。
【0029】
図1において、1は回路基板、2は能動部品、3は受動部品、そして4は封止樹脂である。8は回路基板1を上面に搭載して固定し保持する硬質金属材でなる基板保持台、9はステンレスなど化学的、機械的および耐熱性の金属材である孔版であり、厚みを所定の樹脂封止の印刷厚みとし、中央部分に回路基板1における封止樹脂4が印刷により注入充填される範囲の面積とした開口部を設けている。
【0030】
封止樹脂4は、孔版9の上面の一端に予め供給され蓄積されている。10は孔版9に内蔵され、加熱および温度調整機構(図示せず)により温度制御が自在で、水やオイルなど加熱媒体でなる昇温体、11は同じく孔版9に内蔵され、冷却および温度調整機構(図示せず)により温度制御が自在で、水やオイルなど冷却媒体でなる冷却体である。
【0031】
12は孔版9の下面の開口部外周付近に設置されたシール用の弾性体でなるゴムパッキン、13は孔版9上面を水平摺動移動自在で、ガラエポキシ樹脂や硬質ゴム材などでなる移動自在なスキージ、14は前記構成機構や部材を内蔵し、鋼やステンレスなどの硬質金属材でなる真空加圧チャンバである。
【0032】
15は真空加圧チャンバ14の上部に設置され、アクリル樹脂やエポキシ樹脂などの硬質樹脂材でなる供給扉、16は供給扉15と真空加圧チャンバ14をシールするためのゴム材やシリコン樹脂材などの弾性体でなる2重パッキンである。
【0033】
7は真空加圧チャンバ14の内部を真空引きするための真空ポンプ、17は真空加圧チャンバ14の内部を気体媒体であるエア加圧するためのコンプレッサ、18は真空ポンプ7による真空吸引と、コンプレッサ15による気体媒体のエア加圧を切替えるための黄銅などの金属材でなり、切替機構であるところの切替え弁である。
【0034】
19は操作弁を有し、真空加圧チャンバ14の内部における真空圧の雰囲気および加圧の雰囲気を、大気圧に開放するための黄銅などの金属材でなるリークバルブである。
【0035】
以上のように構成された電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止(印刷)装置の動作について、図面を参照しながら説明する。図2〜5は、本発明の実施形態1における樹脂封止およびアンダーフィル形成の製造工程断面図である。
【0036】
なお、20は回路基板1の上面に注入充填された封止樹脂4が、孔版9における昇温体10の駆動による加熱にて硬化し、半硬化あるいは本硬化してなる封止回路基板である。
【0037】
まず図2に示すように、真空加圧チャンバ14の供給扉15を開放し、能動部品2および受動部品3を搭載し実装した回路基板1を、基板保持台8に載置して固定し保持する。
【0038】
その後、供給扉15を閉じ、孔版9の下面に設置されたゴムパッキン12が圧縮し密着するまで基板保持台8を上昇させる。
【0039】
そして、孔版9を昇温体10の駆動により、30℃〜50℃程度に加熱し、孔版9の上面に予め蓄積された封止樹脂4を低粘度で流動化させる。
【0040】
能動部品2および受動部品3と回路基板1との空隙と、封止樹脂4の脱気をするために、操作弁を操作してリークバルブ19を閉じると共に、切替え弁18を操作して真空ポンプ7側に接続して開放した後、真空ポンプ7を作動させて真空加圧チャンバ14内を200Pa以下の高真空圧の雰囲気に設定する。
【0041】
次に図3に示すように、リークバルブ19の操作弁の操作による開閉量調整により、真空加圧チャンバ14内を300Pa〜500Paの範囲の低真空圧の雰囲気とし、スキージ13を孔版9の上面開口部分を通過する際には低速として移動させ、孔版9の開口部へ低粘度で流動化した封止樹脂4を、孔版9の厚み分にて印刷することにより注入充填する。
【0042】
封止樹脂4を回路基板1の所定箇所に印刷により注入充填した後、前記真空圧の雰囲気で一定時間放置し、スキージ13の移動時に発生する封止樹脂4のローリングによって巻き込まれたエアを脱気する。
【0043】
次に図4に示すように、真空ポンプ7の駆動を停止した後、操作弁の操作によりリークバルブ19を開放して、真空加圧チャンバ14の内部を大気圧に開放する。
【0044】
真空加圧チャンバ14の内部を大気圧に開放した後、操作弁の操作によりリークバルブ19を閉じて、切替え弁18を操作してコンプレッサ17側に接続して開放した後、コンプレッサ17を駆動させて真空加圧チャンバ14の内部を0.5MPa以上の加圧の雰囲気にして、差圧により能動部品2および受動部品3と回路基板1との空隙などに封止樹脂4を浸透充填させる。
【0045】
その後、図5に示すように、真空加圧チャンバ14の内部が前記加圧の雰囲気で、孔版9を昇温体10の駆動により、30℃〜50℃から100℃以上の温度に加熱して一定時間放置することにより、封止樹脂4を半硬化あるいは本硬化させる。
【0046】
半硬化あるいは本硬化した後に、操作弁の操作によりリークバルブ19を開放して真空加圧チャンバ14の内部を大気圧に開放する。
【0047】
樹脂封止およびアンダーフィル形成した半硬化あるいは本硬化の封止回路基板20は、基板保持台8より取り外し、そして供給扉15を開放して真空加圧チャンバ14より取出し、その後、孔版9は冷却体11の駆動により再び30℃〜50℃の温度に冷却される。
【0048】
以上のように、本実施の形態1における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止(印刷)装置は、真空加圧チャンバ内部の雰囲気が真空圧から加圧に移行する際に生じる差圧により、回路基板所定箇所の樹脂封止およびアンダーフィル形成を行うのであり、高密度実装の電子部品相互間、および低背実装電子部品と回路部品との空隙へ封止樹脂を確実かつ緻密に注入充填することができるのである。
【0049】
(実施の形態2)
以下、実施の形態2を用いて、本発明の特に請求項6〜9に記載の発明について、図面を参照しながら説明する。図6は、本発明の実施の形態2における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止装置の要部構成断面図である。
【0050】
本実施の形態2における図6と、前記実施の形態1における図1との主な相違は、封止樹脂4の供給用のディスペンサが、真空加圧チャンバ14の内部に配設されている構造と孔版の構造である。
【0051】
図6において、5は水平および垂直に移動自在に内部に封止樹脂4が封入されおり、エアやオイルなどの圧力により封止樹脂4を供給し注入充填するためのディスペンサである。
【0052】
21はステンレスなどの金属材でなる分割孔版であり、厚みを所定の樹脂封止の充填(すなわち実施の形態1における印刷)厚みとし、中央部分に個片分割される封止回路基板の完成製品寸法サイズにて、桟で区分けされた複数の開口部を設けている。そして22は、分割孔版21の上面から分割孔版21の開口部側面に貫通した封止樹脂4の注入管口である。
【0053】
以上のように構成された電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止装置の動作について、図面を参照しながら説明する。図7〜11は、本発明の実施の形態2における樹脂封止およびアンダーフィル形成の製造工程断面図である。
【0054】
まず図7に示すように、真空加圧チャンバ14の供給扉15を開放し、能動部品2および受動部品3を搭載し実装した回路基板1を基板保持台8に載置して固定し保持する。
【0055】
その後、供給扉15を閉じ分割孔版21の下面に設置されたゴムパッキン12が圧縮し密着するまで基板保持台8を上昇させる。そして、分割孔版21を昇温体10の駆動により、30℃〜50℃程度に加熱する。
【0056】
能動部品2および受動部品3と回路基板1との空隙と、封止樹脂4の脱気をするために、操作弁を操作してリークバルブ19を閉じると共に、切替え弁18を操作して真空ポンプ7側に接続して開放した後、真空ポンプ7を作動させて真空加圧チャンバ14内を200Pa以下の高真空圧の雰囲気に設定する。
【0057】
また、分割孔版21の上部におけるディスペンサ5を、注入管口22の直上まで移動させた後、ディスペンサ5の先端を上面の注入管口22へ挿入する。
【0058】
次に図8に示すように、ディスペンサ5を作動させることにより、能動部品2および受動部品3と回路基板1との空隙に、封止樹脂4を脱気しつつ注入管口22を経由して注入充填する。
【0059】
封止用樹脂4は注入管口22を通過する際に、分割孔版21による加熱にて低粘度となり流動化する。このディスペンサ5の作動による封止樹脂4の注入充填を、個片分割される完成製品寸法サイズにて、桟で区分けされた複数の各開口部に対して同じ動作にて繰り返す。
【0060】
次に図9に示すように、リークバルブ19の操作弁の操作による開閉量調整により、真空加圧チャンバ14内を300Pa〜500Paの範囲である低真空圧の雰囲気とし、能動部品2および受動部品3と回路基板1との空隙などに、差圧により封止樹脂4を浸透充填させる。
【0061】
次に図10に示すように、回路基板1における樹脂封止の厚みが設定の厚みとなるように、再度ディスペンサ5を作動させ、能動部品2および受動部品3と回路基板1との空隙に、封止樹脂4を脱気しつつ注入管口22を経由して注入充填する。同じく個片分割される完成製品寸法サイズにて、桟で区分けされた複数の各開口部に対して繰り返す。
【0062】
そして、真空加圧チャンバ14の内部を、真空ポンプ7の駆動を停止させた後、操作弁の操作によりリークバルブ19を開放して大気圧に開放する。真空加圧チャンバ14の内部を大気圧に開放した後、操作弁の操作によりリークバルブ19を閉じ、切替え弁18をコンプレッサ17側に接続し作動させて、真空加圧チャンバ14の内部を0.5MPa以上の加圧の雰囲気にし、能動部品2および受動部品3と回路基板1との空隙などに、差圧により封止樹脂4を浸透充填させる。
【0063】
その後、図11に示すように、真空加圧チャンバ14の内部が前記加圧の雰囲気で、分割孔版21を昇温体10の駆動により、30℃〜50℃から100℃以上の温度に加熱して一定時間放置することにより、封止樹脂4を半硬化あるいは本硬化させる。
【0064】
半硬化あるいは本硬化した後に、操作弁の操作によりリークバルブ19を開放して真空加圧チャンバ14の内部を大気圧に開放する。
【0065】
樹脂封止およびアンダーフィル形成した半硬化あるいは本硬化の封止回路基板20は、基板保持台8より取り外し、そして供給扉15を開放して真空加圧チャンバ14より取出し、その後、分割孔版21は冷却体11の駆動により再び30℃〜50℃の温度に冷却される。
【0066】
以上のように、本実施の形態2における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止装置は、先の(1次)の封止樹脂の注入充填を実装した電子部品と回路基板との空隙が埋まる量だけ直接実装部品周辺に行い、そして次の(2次)の封止樹脂の注入充填を、所定の樹脂封止厚みとなる量を注入充填することにより、精度良く、確実かつ緻密に樹脂封止する事が出来るのである。
【0067】
【発明の効果】
以上のように、本発明の電子部品の樹脂封止方法およびその装置によれば、高密度に回路基板上に実装された電子部品相互間や回路基板との間隙に、封止樹脂を脱泡した後、塗布量を高精度に制御して確実に注入充填させ、その後に大気圧に開放するので、フィラー含有率の高い封止樹脂であっても、上記空隙に確実かつ緻密に浸透充填させて回路基板の機械的信頼性や電気的接続の信頼性、密着強度を向上させることができるという効果を有するものである。
【図面の簡単な説明】
【図1】本発明の実施の形態1における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止(印刷)装置の要部構成断面図
【図2】同製造工程における真空吸引工程断面図
【図3】同製造工程における印刷充填工程断面図
【図4】同製造工程における加圧工程断面図
【図5】同製造工程における硬化工程断面図
【図6】本発明の実施の形態2における電子部品の樹脂封止およびアンダーフィル形成用の樹脂封止装置の要部構成断面図
【図7】同製造工程における真空吸引工程断面図
【図8】同製造工程における1次注入充填工程断面図
【図9】同製造工程における真空差圧工程断面図
【図10】同製造工程における2次注入充填工程断面図
【図11】同製造工程における硬化工程断面図
【図12】従来における電子部品の樹脂封止およびアンダーフィル形成用のディスペンサによる樹脂封止装置の要部構成断面図
【符号の説明】
1 回路基板
2 能動部品
3 受動部品
4 封止樹脂
5 ディスペンサ
6 真空チャンバ
7 真空ポンプ
8 基板保持台
9 孔版
10 昇温体
11 冷却体
12 ゴムパッキン
13 スキージ
14 真空加圧チャンバ
15 供給扉
16 2重パッキン
17 コンプレッサ
18 切替え弁
19 リークバルブ
20 封止回路基板
21 分割孔版
22 注入管口
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin sealing method and apparatus for an electronic component forming an electronic circuit.
[0002]
[Prior art]
As a conventional resin sealing and underfill forming method for an electronic component, a resin sealing and underfill forming method in which a sealing resin is supplied to a mounted electronic component by a dispenser and injected and filled is known.
[0003]
FIG. 12 is a cross-sectional view of a principal part of a conventional resin sealing device using a dispenser for resin sealing and underfill formation of electronic components.
[0004]
In FIG. 12, 1 is a circuit board having a multilayer structure made of a base material such as resin or ceramic for forming an electronic circuit used in an electronic device, and 2 is solder, gold or the like for forming the electronic circuit. The LGA and the BGA are active components mounted and mounted on the circuit board 1, and 3 is a passive component mounted and mounted on the circuit board 1 with solder for forming the electronic circuit.
[0005]
4 is an insulating base material made of a heat conductive material and an insulating material, or a filler material containing a heat conductive material, and a sealing resin having a low viscosity and a high fluidity, 5 is sealed with the sealing resin 4, The dispenser supplies the sealing resin 4 to a predetermined portion of the circuit board 1 by pressure such as hydraulic pressure and injects and fills it.
[0006]
Reference numeral 6 denotes a vacuum chamber made of a hard metal material such as stainless steel, which incorporates the above-described components and devices, and 7 denotes a vacuum pump for vacuuming the inside of the vacuum chamber 6.
[0007]
In the resin sealing apparatus constructed and arranged as described above, the vacuum pump 7 is driven to suck the vacuum chamber 6 to a predetermined vacuum (pressure). Next, a predetermined amount of sealing resin 4 is supplied by a dispenser 5 around the predetermined active component 2 and passive component 3 to be sealed, and then filled.
[0008]
Thereafter, the inside of the vacuum chamber 6 is opened to atmospheric pressure, and the sealing resin 4 is infiltrated and filled into the gaps between the active component 2 and the passive component 3 and the circuit board 1.
[0009]
For example, Patent Document 1 is known as prior art document information relating to this application.
[0010]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-217267
[Problems to be solved by the invention]
In the resin sealing and underfill forming method of the electronic component by the conventional dispenser, in the infiltration filling into the gap between the active component 2 and the passive component 3 and the circuit board 1 using the sealing resin 4 having a high filler content. Further, since the sealing resin 4 has high viscosity and low fluidity and is osmotic filling by a differential pressure between the vacuum pressure and the atmospheric pressure, there is a problem that an unfilled portion is generated.
[0012]
The present invention is intended to solve the above-described conventional problems, and a highly viscous and low fluid sealing resin having a high filler content is reliably and densely placed in the gap between the active component and the passive component and the circuit board. It is an object of the present invention to provide a resin sealing method for an electronic component and an apparatus therefor that can be infiltrated and filled to improve connection reliability and adhesion strength.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
[0014]
According to the first aspect of the present invention, an electronic component for forming an electronic circuit is mounted and mounted in a vacuum pressurizing chamber having a switching valve and a leak valve for adjusting the internal vacuum pressure and atmosphere. The circuit board is inserted, and the periphery of the electronic component and the sealing resin are deaerated from the atmospheric pressure under vacuum pressure, injected and filled, and left for a predetermined time, and then pressurized by supplying a gaseous medium into the vacuum pressurizing chamber. An electronic component resin sealing method in which the sealing resin is filled with a differential pressure into a circuit board under an atmosphere, and then released to atmospheric pressure, wherein the sealing resin is injected and filled in a vacuum pressurizing chamber. The squeegee and the stencil have a printing application, and after the printing application, the sealing resin is semi-cured or fully cured by raising the temperature of the stencil, and then released to atmospheric pressure. Implemented power Between the components each other and, even gap between the circuit board, it is possible to sufficiently inject the sealing resin, the inside of the chamber at the time of atmospheric release, in the differential pressure to atmosphere atmospheric conditions from the atmosphere of a pressurized state Thus, it is possible to prevent the sealing resin filled in the gap between the mounted electronic component and the circuit board from being removed, that is, lost. Moreover, the effect that the load to an electronic component can be reduced when defoaming sealing resin is also acquired simultaneously.
[0015]
The invention according to claim 2 of the present invention, the vacuum pressure chamber having a switching valve and a leak valve for adjusting the internal vacuum pressure and atmosphere, electronic parts forming an electronic circuit mounted, is mounted The circuit board is inserted, and the periphery of the electronic component and the sealing resin are deaerated from the atmospheric pressure under vacuum pressure, injected and filled, and left for a predetermined time, and then pressurized by supplying a gaseous medium into the vacuum pressurizing chamber. A resin sealing method for an electronic component in which the sealing resin is filled into a circuit board with a differential pressure so as to be released to atmospheric pressure under an atmosphere, wherein the sealing resin is injected and filled by a movable dispenser and a stencil And the stencil is divided into two or more openings divided by a crosspiece, and a sealing resin is injected and filled into electronic parts corresponding to the openings. , After this injection filling Semi-curing or by curing the sealing resin by raising the temperature of the stencil, then is intended to open to atmospheric pressure, thereby to control with high precision the injection loading the required sealing resin, minimum With the limited amount of sealing resin, the effect of being able to reliably inject and fill the sealing resin into the gap between the mounted and mounted electronic component and the circuit board is obtained.
[0016]
In the invention according to claim 3 of the present invention, the upper surface of the divided stencil has a sealing resin injection pipe port penetrating the side surface of the opening, and a tip of a dispenser is inserted into the injection pipe port, The sealing resin is injected and filled through the injection pipe port, and this provides an effect that the sealing resin can be injected and filled along the immediate upper surface of the circuit board .
[0017]
According to a fourth aspect of the present invention, there is provided a vacuum pressurization chamber having a switching valve and a leak valve for adjusting an internal vacuum pressure and atmosphere, and an electronic component installed in the vacuum pressurization chamber. A circuit board holding base that can be fixed and held to move the mounted and mounted circuit board, a stencil provided on the board holding base and having an opening into which a sealing resin is injected and filled, and the seal A squeegee or dispenser for printing and applying a stop resin on a circuit board, and the stencil is a resin for electronic components incorporating a temperature rising body that is a temperature controllable heating medium or a cooling body that is a cooling medium Since this is a sealing device , the sealing resin can be fluidized and injected and filled with low viscosity, and a high vacuum atmosphere and a pressurized atmosphere can be set in the same chamber. ,vacuum The circuit board injected filled with sealing resin under, is the action and effect that it is possible to reduce the operation and working time for transferring to the pressurizing chamber is obtained.
[0018]
Invention of Claim 5 of this invention is a resin sealing apparatus of the electronic component of Claim 4, Comprising: A stencil is a division | segmentation stencil which has several opening part divided by the crosspiece , It becomes possible to control the sealing resin to a required injection filling amount with high accuracy, and an effect of being able to reliably inject and fill the sealing resin into the gap is obtained.
[0019]
The invention described in claim 6 of the present invention, the opening periphery underside of the stencil, disposed rubber packing made of an elastic body, by raising the substrate holder, by deforming compressing the rubber gasket, the 6. The resin sealing device for an electronic component according to claim 4, wherein the substrate holding table and the circuit board are brought into close contact with each other and pressed, whereby an interface between the stencil and the circuit board in the application of the sealing resin. Can be surely degassed from the upper surface of the stencil when the sealing resin injected and filled into the opening of the stencil is degassed in a vacuum pressure atmosphere. The effect is obtained.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
Hereinafter, with reference to the drawings, the first aspect of the present invention will be described with reference to the drawings. In addition, about the component apparatus and member which were demonstrated by the prior art, the same symbol is provided and detailed description is abbreviate | omitted.
[0028]
FIG. 1 is a cross-sectional view of a principal part of a resin sealing (printing) apparatus for resin sealing and underfill formation of an electronic component according to Embodiment 1 of the present invention.
[0029]
In FIG. 1, 1 is a circuit board, 2 is an active component, 3 is a passive component, and 4 is a sealing resin. 8 is a substrate holding base made of a hard metal material for mounting and holding the circuit board 1 on the upper surface, 9 is a stencil made of a chemical, mechanical and heat-resistant metal material such as stainless steel, and has a predetermined resin thickness. An opening having a printing thickness of sealing and an area in a range where the sealing resin 4 in the circuit board 1 is injected and filled by printing is provided in the center portion.
[0030]
The sealing resin 4 is supplied and accumulated in advance on one end of the upper surface of the stencil 9. 10 is built in the stencil 9 and can be controlled by a heating and temperature adjusting mechanism (not shown), and a heating element made of a heating medium such as water or oil. 11 is also built in the stencil 9 and is cooled and adjusted in temperature. It is a cooling body made of a cooling medium such as water or oil, which can be freely controlled by a mechanism (not shown).
[0031]
Reference numeral 12 denotes a rubber packing made of an elastic material for sealing installed near the outer periphery of the opening on the lower surface of the stencil 9, and 13 a horizontal sliding movement on the upper surface of the stencil 9, and a movable made of glass epoxy resin or hard rubber material. A squeegee 14 is a vacuum pressurizing chamber that incorporates the above-described components and members and is made of a hard metal material such as steel or stainless steel.
[0032]
15 is a supply door made of a hard resin material such as acrylic resin or epoxy resin, and is installed on the upper portion of the vacuum pressurization chamber 14, and 16 is a rubber material or silicon resin material for sealing the supply door 15 and the vacuum pressurization chamber 14. It is a double packing made of an elastic body.
[0033]
7 is a vacuum pump for evacuating the inside of the vacuum pressurizing chamber 14, 17 is a compressor for pressurizing the inside of the vacuum pressurizing chamber 14 with air as a gaseous medium, 18 is vacuum suction by the vacuum pump 7, and a compressor 15 is a switching valve made of a metal material such as brass for switching the air pressurization of the gas medium by 15 and serving as a switching mechanism.
[0034]
Reference numeral 19 denotes an operation valve, which is a leak valve made of a metal material such as brass for releasing the vacuum pressure atmosphere and the pressure atmosphere inside the vacuum pressure chamber 14 to atmospheric pressure.
[0035]
The operation of the resin sealing of the electronic component configured as described above and the resin sealing (printing) apparatus for forming the underfill will be described with reference to the drawings. FIGS. 2-5 is sectional drawing of the manufacturing process of resin sealing and underfill formation in Embodiment 1 of this invention.
[0036]
Reference numeral 20 denotes a sealed circuit board in which the sealing resin 4 injected and filled on the upper surface of the circuit board 1 is cured by heating by driving the heating element 10 in the stencil 9 and is semi-cured or fully cured. .
[0037]
First, as shown in FIG. 2, the supply door 15 of the vacuum pressurizing chamber 14 is opened, and the circuit board 1 on which the active component 2 and the passive component 3 are mounted is mounted on the substrate holder 8 and is fixed and held. To do.
[0038]
Thereafter, the supply door 15 is closed, and the substrate holder 8 is raised until the rubber packing 12 installed on the lower surface of the stencil 9 is compressed and brought into close contact.
[0039]
Then, the stencil 9 is heated to about 30 ° C. to 50 ° C. by driving the heating element 10, and the sealing resin 4 accumulated in advance on the upper surface of the stencil 9 is fluidized with low viscosity.
[0040]
In order to degas the gap between the active component 2 and the passive component 3 and the circuit board 1 and the sealing resin 4, the operation valve is operated to close the leak valve 19, and the switching valve 18 is operated to operate the vacuum pump. After connecting and releasing to the 7 side, the vacuum pump 7 is operated to set the inside of the vacuum pressurizing chamber 14 to an atmosphere of a high vacuum pressure of 200 Pa or less.
[0041]
Next, as shown in FIG. 3, by adjusting the opening / closing amount by operating the operation valve of the leak valve 19, the inside of the vacuum pressurizing chamber 14 is made an atmosphere of low vacuum pressure in the range of 300 Pa to 500 Pa, and the squeegee 13 is placed on the upper surface of the stencil 9. When passing through the opening portion, it is moved at a low speed, and the sealing resin 4 fluidized at a low viscosity to the opening portion of the stencil 9 is injected and filled by printing with the thickness of the stencil 9.
[0042]
After the sealing resin 4 is injected and filled into a predetermined portion of the circuit board 1 by printing, the sealing resin 4 is left in the atmosphere of the vacuum pressure for a certain period of time, and the air entrained by the rolling of the sealing resin 4 generated when the squeegee 13 is moved is removed. I care.
[0043]
Next, as shown in FIG. 4, after the drive of the vacuum pump 7 is stopped, the leak valve 19 is opened by operating the operation valve, and the inside of the vacuum pressurizing chamber 14 is opened to the atmospheric pressure.
[0044]
After the inside of the vacuum pressurizing chamber 14 is opened to the atmospheric pressure, the leak valve 19 is closed by operating the operation valve, the switching valve 18 is operated and connected to the compressor 17 side to open, and then the compressor 17 is driven. Then, the inside of the vacuum pressurizing chamber 14 is set to a pressurized atmosphere of 0.5 MPa or more, and the sealing resin 4 is infiltrated and filled into the gaps between the active component 2 and the passive component 3 and the circuit board 1 by the differential pressure.
[0045]
After that, as shown in FIG. 5, the stencil 9 is heated to a temperature of 30 ° C. to 50 ° C. to 100 ° C. or more by driving the heating element 10 in the atmosphere of the pressurization in the vacuum pressurizing chamber 14. The sealing resin 4 is semi-cured or fully cured by leaving it for a certain period of time.
[0046]
After semi-curing or main curing, the leak valve 19 is opened by operating the operation valve to open the interior of the vacuum pressurizing chamber 14 to atmospheric pressure.
[0047]
The semi-cured or fully-cured sealed circuit board 20 formed with resin sealing and underfill is removed from the substrate holding base 8, and the supply door 15 is opened and taken out from the vacuum pressurizing chamber 14, and then the stencil 9 is cooled. The body 11 is cooled again to a temperature of 30 ° C. to 50 ° C. by driving the body 11.
[0048]
As described above, in the resin sealing (printing) apparatus for resin sealing and underfill formation of the electronic component in the first embodiment, the atmosphere inside the vacuum pressurizing chamber is changed from the vacuum pressure to the pressurization. Resin sealing and underfill formation at predetermined locations on the circuit board are performed by the generated differential pressure, and the sealing resin is reliably and accurately placed between the high-density mounting electronic components and between the low-profile mounting electronic components and the circuit components. It is possible to inject and fill densely.
[0049]
(Embodiment 2)
Hereinafter, the invention described in the sixth to ninth aspects of the present invention will be described using the second embodiment with reference to the drawings. FIG. 6 is a cross-sectional view of a principal part of a resin sealing device for resin sealing and underfill formation of an electronic component according to Embodiment 2 of the present invention.
[0050]
The main difference between FIG. 6 in the second embodiment and FIG. 1 in the first embodiment is that the dispenser for supplying the sealing resin 4 is disposed inside the vacuum pressurizing chamber 14. And stencil structure.
[0051]
In FIG. 6, 5 is a dispenser in which the sealing resin 4 is enclosed so as to be movable in the horizontal and vertical directions, and the sealing resin 4 is supplied and injected and filled by pressure of air or oil.
[0052]
21 is a divided stencil plate made of a metal material such as stainless steel, and a finished product of a sealed circuit board that is divided into individual pieces at the central portion with a thickness of a predetermined resin-sealing filling (that is, printing in the first embodiment). A plurality of openings divided by bars are provided in the size size. Reference numeral 22 denotes an injection pipe port for the sealing resin 4 penetrating from the upper surface of the divided stencil plate 21 to the opening side surface of the divided stencil plate 21.
[0053]
The operation of the resin sealing of the electronic component configured as described above and the resin sealing device for underfill formation will be described with reference to the drawings. 7 to 11 are sectional views of manufacturing steps for resin sealing and underfill formation according to Embodiment 2 of the present invention.
[0054]
First, as shown in FIG. 7, the supply door 15 of the vacuum pressurizing chamber 14 is opened, and the circuit board 1 on which the active component 2 and the passive component 3 are mounted is mounted on the substrate holder 8 and fixed and held. .
[0055]
Thereafter, the supply door 15 is closed, and the substrate holder 8 is raised until the rubber packing 12 installed on the lower surface of the divided stencil 21 is compressed and brought into close contact. Then, the divided stencil plate 21 is heated to about 30 ° C. to 50 ° C. by driving the temperature raising body 10.
[0056]
In order to degas the gap between the active component 2 and the passive component 3 and the circuit board 1 and the sealing resin 4, the operation valve is operated to close the leak valve 19, and the switching valve 18 is operated to operate the vacuum pump. After connecting and releasing to the 7 side, the vacuum pump 7 is operated to set the inside of the vacuum pressurizing chamber 14 to an atmosphere of a high vacuum pressure of 200 Pa or less.
[0057]
Further, after the dispenser 5 at the upper part of the divided stencil plate 21 is moved to the position immediately above the injection pipe port 22, the tip of the dispenser 5 is inserted into the injection pipe port 22 on the upper surface.
[0058]
Next, as shown in FIG. 8, by operating the dispenser 5, the sealing resin 4 is deaerated in the gaps between the active component 2 and the passive component 3 and the circuit board 1 via the injection pipe port 22. Fill by injection.
[0059]
When the sealing resin 4 passes through the injection tube port 22, the sealing resin 4 becomes low viscosity and fluidizes by heating with the divided stencil plate 21. The filling and filling of the sealing resin 4 by the operation of the dispenser 5 is repeated in the same operation with respect to each of the plurality of openings divided by the crosspieces at the finished product size size divided into pieces.
[0060]
Next, as shown in FIG. 9, by adjusting the opening / closing amount by operating the operation valve of the leak valve 19, the inside of the vacuum pressurizing chamber 14 is made an atmosphere of low vacuum pressure in the range of 300 Pa to 500 Pa, and the active component 2 and the passive component. The sealing resin 4 is infiltrated and filled into the gap between the circuit board 1 and the circuit board 1 by a differential pressure.
[0061]
Next, as shown in FIG. 10, the dispenser 5 is operated again so that the thickness of the resin sealing in the circuit board 1 becomes the set thickness, and the active component 2 and the passive component 3 and the circuit board 1 are placed in the gaps. The sealing resin 4 is injected and filled through the injection pipe port 22 while degassing. It repeats with respect to each of several opening part divided by the crosspiece in the finished product dimension size similarly divided into pieces.
[0062]
Then, after the drive of the vacuum pump 7 is stopped inside the vacuum pressurizing chamber 14, the leak valve 19 is opened to the atmospheric pressure by operating the operation valve. After the inside of the vacuum pressurizing chamber 14 is opened to atmospheric pressure, the leak valve 19 is closed by operating the operation valve, the switching valve 18 is connected to the compressor 17 side and operated, and the inside of the vacuum pressurizing chamber 14 is set to 0. The atmosphere is pressurized to 5 MPa or more, and the sealing resin 4 is infiltrated and filled into the gaps between the active component 2 and the passive component 3 and the circuit board 1 by a differential pressure.
[0063]
After that, as shown in FIG. 11, the inside of the vacuum pressurization chamber 14 is heated to the temperature of 30 ° C. to 50 ° C. to 100 ° C. or more by driving the temperature rising body 10 in the pressurized atmosphere. The sealing resin 4 is semi-cured or fully cured by leaving it for a certain period of time.
[0064]
After semi-curing or main curing, the leak valve 19 is opened by operating the operation valve to open the interior of the vacuum pressurizing chamber 14 to atmospheric pressure.
[0065]
The semi-cured or fully-cured sealed circuit board 20 formed with resin sealing and underfill is removed from the substrate holding base 8 and is taken out from the vacuum pressurizing chamber 14 by opening the supply door 15. It is cooled again to a temperature of 30 ° C. to 50 ° C. by driving the cooling body 11.
[0066]
As described above, the resin sealing device for resin sealing and underfill formation of the electronic component according to the second embodiment includes the electronic component and the circuit board on which the (primary) sealing resin injection filling is mounted. As much as the gap is filled directly around the mounting component, and the next (secondary) sealing resin is injected and filled in an amount that will give a predetermined resin sealing thickness, ensuring accuracy and reliability. In addition, it can be densely sealed with resin.
[0067]
【The invention's effect】
As described above, according to the resin sealing method and apparatus for electronic components of the present invention , the sealing resin is defoamed between the electronic components mounted on the circuit board at a high density and in the gap with the circuit board. after the coating amount is reliably injected filling is controlled with high accuracy, because then opened to the atmospheric pressure, even at high sealing resin with filler content, is reliably and precisely penetrate filled into the void Thus , the mechanical reliability of the circuit board , the reliability of the electrical connection, and the adhesion strength can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a principal part configuration of a resin sealing (printing) apparatus for resin sealing and underfill formation of an electronic component according to a first embodiment of the present invention. 3 is a cross-sectional view of a printing filling process in the manufacturing process. FIG. 4 is a cross-sectional view of a pressing process in the manufacturing process. FIG. 5 is a cross-sectional view of a curing process in the manufacturing process. Cross-sectional view of the principal part of a resin sealing device for resin sealing and underfill formation of electronic parts. FIG. 7 is a cross-sectional view of a vacuum suction process in the manufacturing process. FIG. 8 is a cross-sectional view of a primary injection filling process in the manufacturing process. 9 is a sectional view of a vacuum differential pressure process in the manufacturing process. FIG. 10 is a sectional view of a secondary injection filling process in the manufacturing process. FIG. 11 is a sectional view of a curing process in the manufacturing process. Resin sealing Main portion configuration sectional view of a resin sealing apparatus according to dispensers for fine underfill forming EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Circuit board 2 Active component 3 Passive component 4 Sealing resin 5 Dispenser 6 Vacuum chamber 7 Vacuum pump 8 Substrate holding base 9 Plating plate 10 Heating body 11 Cooling body 12 Rubber packing 13 Squeegee 14 Vacuum pressurization chamber 15 Supply door 16 Double Packing 17 Compressor 18 Switching valve 19 Leak valve 20 Sealed circuit board 21 Divided hole plate 22 Injection pipe port

Claims (6)

内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバ内に、電子回路を形成する電子部品が搭載、実装された回路基板を挿入し、前記電子部品の周辺と封止樹脂とを大気圧から真空圧下で脱気、注入充填を行い所定時間放置した後、気体媒体を前記真空加圧チャンバ内へ供給した加圧雰囲気下で、前記封止樹脂を回路基板へ差圧浸透充填し、その後大気圧に開放する電子部品の樹脂封止方法であって、前記封止樹脂の注入充填は、真空加圧チャンバ内に有するスキージと孔版による印刷塗布により行い、この印刷塗布後に前記孔版を昇温することで封止樹脂を半硬化あるいは本硬化させて、その後大気圧に開放することを特徴とする電子部品の樹脂封止方法。 An electronic component for forming an electronic circuit is mounted in a vacuum pressurizing chamber having a switching valve and a leak valve for adjusting the internal vacuum pressure and atmosphere, and a circuit board on which the electronic circuit is mounted is inserted, The sealing resin is deaerated from the atmospheric pressure under vacuum pressure, injected and filled, allowed to stand for a predetermined time, and then the sealing resin is supplied to the circuit board under a pressurized atmosphere in which a gaseous medium is supplied into the vacuum pressure chamber. This is a resin sealing method for electronic parts that is filled with a differential pressure and then released to atmospheric pressure. The filling and filling of the sealing resin is performed by printing and coating with a squeegee and a stencil in a vacuum pressurizing chamber. A resin sealing method for an electronic component, characterized in that the sealing resin is semi-cured or fully cured by raising the temperature of the stencil after coating, and then released to atmospheric pressure . 内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバ内に、電子回路を形成する電子部品が搭載、実装された回路基板を挿入し、前記電子部品の周辺と封止樹脂とを大気圧から真空圧下で脱気、注入充填を行い所定時間放置した後、気体媒体を前記真空加圧チャンバ内へ供給した加圧雰囲気下で、前記封止樹脂を回路基板へ差圧浸透充填し、その後大気圧に開放する電子部品の樹脂封止方法であって、前記封止樹脂の注入充填は、移動可能なディスペンサと孔版とを用いて二回以上に分割して行うとともに、前記孔版を、桟で区分けされた複数の開口部を有する分割孔版として、これら開口部に対応する電子部品に封止樹脂の注入充填を行い、この注入充填後に前記分割孔版を昇温することで封止樹脂を半硬化あるいは本硬化させて、その後大気圧に開放することを特徴とする電子部品の樹脂封止方法。 An electronic component for forming an electronic circuit is mounted in a vacuum pressurizing chamber having a switching valve and a leak valve for adjusting the internal vacuum pressure and atmosphere, and a circuit board on which the electronic circuit is mounted is inserted, The sealing resin is deaerated from the atmospheric pressure under vacuum pressure, injected and filled, allowed to stand for a predetermined time, and then the sealing resin is supplied to the circuit board under a pressurized atmosphere in which a gaseous medium is supplied into the vacuum pressure chamber. This is a resin sealing method for electronic components that is filled with differential pressure soaking and then released to atmospheric pressure, and the sealing resin is injected and filled in two or more portions using a movable dispenser and a stencil. At the same time, the stencil is divided into stencil plates having a plurality of openings divided by crosspieces, and an electronic component corresponding to these openings is injected and filled with sealing resin, and the temperature of the divided stencil is raised after this filling. Sealing tree The semi-cured or by the curing, then the resin encapsulation method of the electronic component, characterized in that the opening to the atmospheric pressure. 分割孔版の上面には、開口部側面に貫通した封止樹脂の注入管口を有し、この注入管口にディスペンサの先端を挿入して、前記注入管口を経由して封止樹脂を注入充填する請求項2に記載の電子部品の樹脂封止方法。 The upper surface of the divided stencil plate has a sealing resin injection pipe port penetrating through the side surface of the opening. The tip of the dispenser is inserted into the injection pipe port, and the sealing resin is injected via the injection pipe port. The resin sealing method of the electronic component according to claim 2 to be filled . 内部の真空圧や雰囲気を調整するための切替え弁およびリークバルブを有する真空加圧チャンバと、この真空加圧チャンバ内に設置された、電子部品を搭載、実装した回路基板を固定、保持して移動自在な基板保持台と、この基板保持台上に設置された、中央部に封止樹脂が注入充填される開口部を有する孔版と、前記封止樹脂を回路基板上に印刷塗布するためのスキージまたはディスペンサとを備え、前記孔版は、温度制御が自在な加熱媒体である昇温体、または冷却媒体である冷却体を内蔵した電子部品の樹脂封止装置 A vacuum pressurization chamber having a switching valve and leak valve for adjusting the internal vacuum pressure and atmosphere, and a circuit board mounted and mounted with electronic components installed in the vacuum pressurization chamber A movable substrate holding table, a stencil provided on the substrate holding table and having an opening into which a sealing resin is injected and filled in a central portion, and for printing and applying the sealing resin on a circuit board A squeegee or a dispenser, wherein the stencil is a resin sealing device for an electronic component having a built-in temperature raising body that is a heating medium whose temperature can be freely controlled or a cooling body that is a cooling medium . 孔版は、桟で区分けされた複数の開口部を有する分割孔版である請求項4に記載の電子部品の樹脂封止装置 5. The resin sealing device for an electronic component according to claim 4, wherein the stencil is a divided stencil having a plurality of openings divided by bars . 孔版の開口部外周下面に、弾性体からなるゴムパッキンを配設し、基板保持台を上昇させることで、前記ゴムパッキンを変形圧縮させて、前記基板保持台と回路基板との密着および押圧を行う請求項4または請求項5に記載の電子部品の樹脂封止装置 A rubber packing made of an elastic material is disposed on the lower surface of the outer periphery of the opening of the stencil, and the substrate holding table is raised to deform and compress the rubber packing so that the substrate holding table and the circuit board are in close contact with each other and pressed. resin sealing device for an electronic component according to claim 4 or claim 5 performed.
JP2003179113A 2003-06-24 2003-06-24 Resin sealing method and apparatus for electronic parts Expired - Fee Related JP3956906B2 (en)

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